Means for controlling the flow of gases.



PATENTED JULY 14, 1903..

:y fNb. 723,464.v

H'. E. Dow.

MEANS Eon GONTEOLLING- TEE ELOW'OE GASES.

v APPLIOATION FILED EEE. 13. 1902.

No non EL.

` -gUN1TED STTS Fatented July I4, 1903.

PATENT OFFICE...

' HERBERT H. DOW, OF MIDLAND, MICHIGAN, ASSIGNOR TO DOW CHEMICAL COMPANY, OF MIDLAND, MICHIGAN, A CORPORATION OF MICHIGAN.

MEANS'FOR CONTRLLING THE FLOW OF GASES.

SPECIFICATION forming part of Letters Patent No. 733,464, dated July 14, 1903.

To all @71,01% it' mag/econoom.:

Be it known thatIHnRBnR'r H. Dow, a`citi. zen of the United vStates, and a resident of Midland, county lof Midland, and State of 5- Michigan, have inyentedanewand usefulImprovement in 'Means forC-oztrolli-n g the Flow of Gases, of which the following is a specification,.t he principle of they invention being' herein'explained 4'and the ,bestmode in which xo I have contemplated applying that principle, so as to distinguish it from other inventions.

My invention relates to meansffor controlling the how of gases through ducts, its object being to provide means for shutting oit or diverting such ow without permitting the escape of gas intothe atmosphere or the inux of air-'into thenucts.

The invention isjparticularly adapted for application to ducts or mains for conducting zo gases, such 'as chlorin, which have a deleterious action upon most substances, and hence usually preclude the use of valves of ordinaryc nstruction.- 4

Said invention consists of means hereinafter fully described, and specifically set-forth in the claims.' f A The annexed drawings and the following description set forth in detail certain means l embodying" the `invention', such disclosed 3o means constituting but one of various mechanical forms in which the principle of the inventionmay beused.

In said annexed drawings, Figure I represents a plan view of one`form of device embodying my invention. Figs. II and III represent cross-sectional 'views ot same, taken upon planes indicated, respectively, by lines 2 2 and 3 3' in Fig. I. Fig. IV represents a longitudinal cross-section, and Fig. Va plan 4o view, ofa second form of device embodying the principle ot'.my invention, such section being taken upon the plane indicated by line 4 4 in Fig. V. Fig. VI represents a longitudinal cross-section, and Fig. VII a plan view,

of a third form of device embodying the principle of my invention, such section being taken upon the plane indicated by line 6 6 in Fig. VII.

In the form illustrated in Figs. I, II, and

5o III, A and B represent, respectively, the upwardlyextending extremities ot two gas- Applicatio'n-iiled February 13, 1902. Serial No. 93,819. (No model.)

ducts, these extremities being completely surrounded by a water receptacle or' lute Vf("},^-w which is suallyfieast integral with the pipe, but whic {may-be connected in any suitable 55 manner so as to form a water-tight receptacle.

The longitudinal sides ot' the lute are formed upon the arcsiof concentric circles in-:thispal'jticularfformot my invention, ,the purpose of which will lrereinafterappear. Water is placed 693,0?V in the lute andl completely surrounds the duct extremities, asshown. Located in such lute and of a form such as will permit it to be moved longitudinally therein is a cap D,having a wall d extending downwardly below` the plane of the openings ofthe'ducts andl of a depth sucient to permit the cap to be raised some distance without being withdrawn fronr'jfhewater in the receptacle. From the I middle of the cap rises a U-duct d', the extremity of 7o which rests uponthe top of a third .pipe E, which is also provided with a water-lute e,. such extremity being providedwith cupc', surrounding the extremity of pipeE andextending downwardly into the lute, as shown in Fig.- II. On either sidezof the opening in the cap into duct d' is a transversely-locatedwall or diaphragm (Zextending across? the entire distance between the sides of the cup d. These diaphragms are equal in and ofa depth 8o such that a plane passing through their lower extremities will intersect the outer wall of the cap. The water in the lute is of quantity l, suiicient to permit thc diaphragms d2 to ext tend below itssu'rface 5 85- When it is desired to eect communication between ducts A and E, the cap is placed so as to cause the endet-duct A to be included between diaphragms d2,as shown in the drawing Fig. III. To disconnect these two ducts 9o and connect B and E, the cap is lifted upwardly a distance sufficient to permit it to be moved o v'erandthen dropped so as to include the end of B between diaphragms d2, the end of A being thereby capped and further communication :therewith out oft, Such change of position-"may, it is then seen, be effected without permitting the escape-of gas from the ducts into the atmosphere or the entrance of air into the ducts from Without, roo

`since the dilerenee in depth between cup d :and diaphragms d2 permits the latter to be Agreat to force the Water out of theiute orinto 2 v Vea-i621 withdrawn from the waters surface without withdrawing the cup d therefrom when the difference between atmospheric pressure and the pressure of the gas is not sufficiently the duct. Communication with the capped lduct is eectually cut olf by the interposition of one of the diaphragme intermediately ot' such duct and the cap-duct d, such diaphragm extending below the waters surface.

Figs. IV and V illustrate a second form of device embodying the principle of my invention. This form is designed to connect and disconnect two ducts or mains, such as F and G, by means of a U-duct H, the form of the cap being somewhat varied. The intermediate diaphragm h2 is made bell-shaped, passages h being formed around same and effecting communication with the cap-duct h'. In the construction the U-duct is raised or lowered to connect or disconnect the mains, the bell-diaphragm extending below the waters surface when in its closing position.

Asimple form of device embodying my invention is illustrated in Figs. VI and VII. In this construction the cap consists of an inverted bell J, having a single diaphragm j extending across its interior. A single lute K surrounds both extremities L and M of the gas-ducts, the bell being adapted to include both such extremities. As in the case of the device just previously described connection or disconnection is established by-merely raising or lowering the bell; the diaphragm j' being interposed or withdrawn from between the duct extremities.

Other modes of applying the principle of my invention may be employed instead of the one explained, change being made as regards i its...

the means herein disclosed, provided the means stated by any one of the following claims or the equivalent of such stated means be employed.

I therefore particularly point eilt and distinctly claim as my invention- 1. In means for controlling the iiow of gases, the combination with two fixed ducts, the extremity of each of which is surrounded by a water-receptacle, of a movable U -shaped duct having its two extremities extending into said receptacles respectively, one extremity of such movable duct being provided with an interior diaphragm terminating in a plane intersecting the adjacent wall of the movable duct, and forming an inclosure upon the interior of such extremity adapted to surround its respective duct end.

2. In means for controlling the how of gases, the combination of three xed ducts, the extremities of two of which are surrounded by a water-lute, and the extremity of the third of which is surrounded by a second and separate water-lute, and a movable U -shaped duct having its two extremities extending into the water lutes respectively, one extremity of such movable duct being provided with two interior diaphragme terminating in a plane intersecting the adjacent wall of the movable duct and forming a central inclosure adapted to surround either of two duct extremities, whereby either one of such duct extremities may be alternately connected with or cnt off from the third.

Signed by me this 24th day of January,1902.

HERBERT H. DOW.

Attest:

D. T. DAvIEs, A. E. MERKEL. 

